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PDF GT828 Data sheet ( Hoja de datos )
| Número de pieza | GT828 | |
| Descripción | A 5-point Touch solution for Tablet | |
| Fabricantes | Goodix | |
| Logotipo |  |
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GT828: A 5-point touch Solution for Tablet
GT828
A 5-point Touch solution for Tablet
Rev.03——2012.03.28
====== Announcement of exemption======
The application information and other similar content in this publication are only provided for you
and they may be substituted by any updated information. Your responsibility is to ensure
application in conformity with technological specifications. GOODIX will not make any statement
or guarantee, expressly or implied, in writing or orally, to such information, including but not limited
to, any statement or warranty, legally or otherwise, to their use, quality, performance, marketability
or suitability to special purpose. GOODIX shall not be liable for any outcome arising form such
information or use of such information. Any product of GOODIX shall not be used as a vital
component for life maintaining system without written consent from GOODIX. Under protection of
GOODIX intellectual property rights, any license shall not be transferred secretly or otherwise.
Copyright reserved by GOODIX
1
1 page  
GT828: A 5-point touch Solution for Tablet
27
28
29
30
31
32
33
34
35~50
51
52
53
54~67
68
I2C_SDA
I2C_SCL
GND
VDDIO
/RSTB
CLK_IN
EXT_CLK_SEL
CLK_OUT
DRV29~DRV14
VEXC
BOOST
DCDC_VCC
DRV13~DRV00
VREF
I2C data
I2C clock
Digital Ground
VDD of GPIO
System reset pin
External clock input
pin
External clock enable
Internal clock output
pin
Driving signal output
High voltage driving
power input pin
Power supply switch
Built-in switch power
input pin
Driving channel
Reference voltage
External pull-up
External pull-up
Connect with DVDD：1.8V
Connect with AVDD：
AVDD
Internal pull-up，pull-down
to reset
Suspending
Suspending
Suspending
Connect with electrical
inductance and diode
Connect 0.1uF capacitor
with AGND
Connect 220K resistance
with AVDD
Copyright reserved by GOODIX
5
5 Page 
GT828: A 5-point touch Solution for Tablet
0xFAB R/W
0XFAC
-
~0XFB1
0xFB2 R/W
0xFB3 R/W
0xFB4 R/W
0xFB5 R/W
0xFB6 R/W
0xFB7 R/W
0xFB8 R/W
0xFB9 R/W
0xFBA R/W
0xFBB R/W
0xFBC R/W
0xFBD R/W
0xFBE R/W
SensorCH13
NC
ADCCFG
SCAN
F1SET
F2SET
F3SET
F1PNUM
F2PNUM
F3PNUM
F1DELAY
F2DELAY
F3DELAY
DC-DC
Sc_Touch
Pin connected to the Fourteenth sensing channel on Touch panel
Reserved
Chip scanning control parameter
Chip scanning control parameter
The frequency of driving pulse No.1
The frequency of driving pulse No.2
The frequency of driving pulse No.3
Quantity of driving pulse No. 1
Quantity of driving pulse No. 2
Quantity of driving pulse No. 3
Phase delay of Driving pulse No.1
Phase delay of Driving pulse No.2
Phase delay of Driving pulse No.3
High Pressure setting
Threshold of touch keys
0xFBF R/W
0xFC0 R/W
0xFC1 R/W
0xFC2 R/W
0xFC3 R/W
0xFC4 R/W
0xFC5 R/W
0xFC6 R/W
0xFC7 R/W
0xFC8 R/W
0xFC9 R/W
0xFCA R/W
Sc_Leave
Md_switch
LPower_C
Refresh
Touch_N
Output_Th
X_Ou_Max_H
X_Ou_Max_L
Y_Ou_Max_H
Y_Ou_Max_L
X_Co_Sm
Y_Co_Sm
Threshold of touch keys leave
SITO
INT
Shape_
Noise
Reserved DD2 Reserved
Pulse
Reserved Reserved
EN reduction
mode
switch
Reserved
Time to enter low power consumption without touch keys:
0-63s is valid. Unit: seconds
0-100 is valid； the cycle is10ms if it’s 0, the cycle is 20ms if it’s 100
Reserved
Reserved
Touch points output，1-5 is valid
Output limit，only output if coordinate change is bigger than this value
Max of X coordinates
Max of Y coordinates
Smooth threshold in X: 0~255, 0 refers to off
Smooth threshold in Y: 0~255, 0 refers to off
0xFCB R/W
X_Sp_Lim
Slide speed limitation in X: 0~255, 0 refers to off
0xFCC R/W
0xFCD R/W
0xFCE R/W
0xFCF R/W
0xFD0 R/W
Y_Sp_Lim
Noise_R
NC
Filter
Large_Tc
Slide speed limitation in Y: 0~255, 0 refers to off
Reserved
Reduce white noise:0-15 is valid
Reserved
Reserved
coordinate filter: 0~15, Step=4
Large touch reference: 0~255 dots
Copyright reserved by GOODIX
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet GT828.PDF ] | |
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